1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.haxx.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ***************************************************************************/
22 /* <DESC>
23 * Show how to extract Location: header and URL to redirect to.
24 * </DESC>
25 */
26 #include <stdio.h>
27 #include <curl/curl.h>
28
main(void)29 int main(void)
30 {
31 CURL *curl;
32 CURLcode res;
33 char *location;
34 long response_code;
35
36 curl = curl_easy_init();
37 if(curl) {
38 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
39
40 /* example.com is redirected, figure out the redirection! */
41
42 /* Perform the request, res will get the return code */
43 res = curl_easy_perform(curl);
44 /* Check for errors */
45 if(res != CURLE_OK)
46 fprintf(stderr, "curl_easy_perform() failed: %s\n",
47 curl_easy_strerror(res));
48 else {
49 res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response_code);
50 if((res == CURLE_OK) &&
51 ((response_code / 100) != 3)) {
52 /* a redirect implies a 3xx response code */
53 fprintf(stderr, "Not a redirect.\n");
54 }
55 else {
56 res = curl_easy_getinfo(curl, CURLINFO_REDIRECT_URL, &location);
57
58 if((res == CURLE_OK) && location) {
59 /* This is the new absolute URL that you could redirect to, even if
60 * the Location: response header may have been a relative URL. */
61 printf("Redirected to: %s\n", location);
62 }
63 }
64 }
65
66 /* always cleanup */
67 curl_easy_cleanup(curl);
68 }
69 return 0;
70 }
71